Coming with such a low ranking to a GS (and apparently in good form), I guess he can be quite a threat to any of the top players he has to face early in his quarter. Maybe he'll end up losing but if there's a chance of someone taking out Federer, Nadal, Djokovic, etc. early, I'd say he's the most likely candidate to do the job.

Anyhow, I'll wait to see what the draw is like. Something interesting might happen this year too.